Los Angeles is finally going underground
A new four-mile subway segment with three stations is set to open in Los Angeles along Wilshire Boulevard, connecting downtown to the Pacific Ocean. The project overcame challenging geology, including methane-rich soil, using advanced tunnel-boring technology.
Los Angeles is expanding its subway system with a new four-mile segment along Wilshire Boulevard. The project, which includes three new stations, will connect downtown LA to the Pacific Ocean, reducing travel time from hours to 25 minutes. The area's challenging geology, featuring tarry and methane-rich soil, required advanced technology to overcome. An earth-pressure-balance tunnel-boring machine was used to dig through the ground, and precast concrete liner segments were installed to create a gas- and waterproof tube. The project cost nearly $4 billion and was not completed on time or under budget. Despite this, the new stations are expected to be transformative for the city.
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